Verify API comes packed with features designed for developers and businesses.
Deliver OTP codes across SMS, WhatsApp, Voice Calls, Viber, and Email with a single API call.
Authenticate users seamlessly by validating their active SIM status directly through carrier signals.
Automatically try alternative delivery channels if the initial code delivery is delayed or fails.
Prevent OTP flooding and malicious fraud attacks with advanced, IP-aware velocity tracking.
Query mobile carrier signals to block OTP verification if a recent SIM card swap was detected.
Deliver OTP messages in the recipient's local language with automatic translation support.
Personalize validation messages with customizable lengths, alphanumeric codes, and expiration times.
Real-time priority routing that guarantees OTP code delivery within seconds globally.
Track code generation, delivery times, conversion rates, and carrier latencies.
SMSLY securely handles the creation, storage, and cryptographic validation of verification codes.
Start building with Verify API today. Free tier available.